oil seeds pretreatment
In the oil line, before the extrusion of oil from oil containing materials, an oil pretreatment process is typically undertaken to improve the efficiency of production and to ultimately save on costs. The entire oil milling process generally includes: cleaning, sieving, hulling, separation, cracking, particle making, frying, softening, flaking, drying, and expelling oil materials. The process: cleaner --> sheller --> dehuller --> crusher / flaker --> steam cooker --> softening --> extruder --> dryer.
we always refers to the seed processing section during the entire oil processing plant. Seed processing is to make the seeds in the best condition to process the most oil out, in other words, it is applied to best improve the production efficiency and save costs.
The smooth preparation prior to main extraction is very important to comply with this contact, smaller the material size, better the penetration of the solvent into the oil bearing cells, but too fine a size will prevent the solvent from percolation through the mass. Hence an optimum size is absolutely essential for efficient extraction.
However, all the pretreatment design will be adjusted according to different types of oil seeds and at the same time, you must take the clients’ exact requirements into consideration!
The pretreatment usually means the working procedures of detaching the impurities out of the oil material. These impurities here generally refer to the following items:
- Organic impurities, such as the stem leaf, cord, chemical fibers, velveteen and their seeds;
- The inorganic impurities, such as soil, dinas and metal, about oil-bearing impurities.
The method of seed preparation does vary from material to material depending upon its oil content and physical properties. We grouped them into three categories: Oil Cakes, Oil Bearing Seeds (Soybeans, Sunflower, Rape Seed, Canola) and Floury Materials (Rice Bran). For different raw materials, we have different solutions.
Seed Processing Equipment
During the entire seed processing plant, there are quite a lot of seed processing equipment, for example sheller, cleaning Sieve, gravity stone remover, magnetic selector crusher, flaker, softening pot, extruder, dryer etc. Below are some seed processing equipment:
Seed Processing Process
Usually, seed processing plant always including the following processing process:
Oil seed cleaning and selcting is an improtant processing to the whole oil press process. we are careless to choose the oilseed, the impurities within it may harm the oil press equipment in cleaning and separating process. Sand among the se...
After cleaning, shelled oilseeds such as sunflower seeds and peanut are conveyed to the seed dehuller equipment to divid the kernels. AGICO Group oilseed dehuller machines adopted unique seed dehuller are controlled by frequency conversion...
Finished dehuller, oilseeds need to be softened. Softening is mainly to adjust temperature and moisture of oilseeds to improve oil yield and qualitys. Some oilseeds such as the soybean lower oil yield have to be softened before flaking. Dur...
Flaking is the essence of the oil extraction plant. Conditioned oilseeds areconvey to the flaking machine after softening/crushing. Flaking is mainly to make softening/crushing oilseeds into flat pieces with thickness under the mechanical i...
Oilseed extruding machine is usually used for soybean seed processing. Recently it can also be used to manufacture various expanded feeds in oil, rice bran and process the flaked rapeseeds, cotton seeds etc. by certain seed processing equip...